Mossbauer spectra and magnetic properties of mechanically alloyed SmFe11-xCoxTi

Authors
Bessais, L Djega-Mariadassou, C Greneche, JM
Citation
L. Bessais et al., Mossbauer spectra and magnetic properties of mechanically alloyed SmFe11-xCoxTi, J MAGN MAGN, 226, 2001, pp. 1564-1566
Citations number
6
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
ISSN journal
03048853 → ACNP
Volume
226
Year of publication
2001
Part
2
Pages
1564 - 1566
Database
ISI
SICI code
0304-8853(200105)226:<1564:MSAMPO>2.0.ZU;2-A
Abstract
The effect of Co substitution on coercivity (H-C) and Fe-57 hyperfine param eters of mechanically alloyed SmFe11-xCoxTi (x less than or equal to2) were systematically studied. H-C exhibits a maximum at 1123 K resulting from th e competition between surface defect effect and domain size. It is shown fr om the isomer shift (delta) assigned on the basis of Wigner-Seitz cell volu mes that Co atoms occupy preferentially 8f sites of the ThMn12-type structu re. The mean hyperfine field (B-HF) increases with substitution. (C) 2001 E lsevier Science B.V. All rights reserved.